DE102017009452A1 - Internal combustion engine for a motor vehicle and motor vehicle with such an internal combustion engine - Google Patents

Abstract

The invention relates to an internal combustion engine (10) for a motor vehicle, having at least one first combustion chamber (14), with at least one second combustion chamber (16), with at least one first exhaust gas conduit element (44) through which exhaust gas can flow from the first combustion chamber (14) at least one second exhaust pipe element (46) through which exhaust gas can flow from the second combustion chamber (16), with at least one exhaust gas turbocharger (24) having a turbine (34) with a turbine housing (36) which has a first flow (38) into which first exhaust conduit member (44) opens, a second flood (40) into which the second exhaust conduit member (46) opens and at least one of exhaust from the combustion chambers (14, 16) through which third flood (42), and a rotatable in the turbine housing (36) received turbine wheel (50), with a bypass device (58) which at least one of exhaust gas from the first and second exhaust pipe element (44, 46) through-flowable bypass line (60) over which the turbine wheel (50) is to bypass at least a portion of the exhaust gas from the first and second exhaust conduit members (44, 46), having valve means (64) including a first valve member (66) an amount of exhaust gas flowing through the bypass line (60) and bypassing the turbine wheel (50) is adjustable from the first and second exhaust conduit members (44, 46) and includes a second valve member (68) and a third exhaust conduit member (48) into the third flood (42) opens.

Description

The invention relates to an internal combustion engine for a motor vehicle according to the preamble of claim 1. Furthermore, the invention relates to a motor vehicle with such an internal combustion engine.

Such an internal combustion engine for a motor vehicle is for example already DE 10 2004 055 571 A1 to be known as known. The internal combustion engine has at least one first combustion chamber, at least one second combustion chamber and at least one first exhaust gas conduit element through which exhaust gas can flow from the first combustion chamber. In addition, the internal combustion engine has at least one second exhaust pipe element, which can be flowed through by exhaust gas from the second combustion chamber. Furthermore, the internal combustion engine comprises at least one exhaust gas turbocharger which comprises a turbine with a turbine housing. The turbine housing has a first flow, a second flow and a third flow, wherein the first exhaust pipe element opens into the first flow and the second exhaust pipe element into the second flow. The third flood can be traversed by exhaust gas from the combustion chambers. In addition, the turbine comprises a rotatably received in the turbine housing and driven by the exhaust turbine wheel. Furthermore, a bypass device is provided, which has at least one bypass line through which exhaust gas can flow from the first and the second exhaust-gas conduit elements, by means of which the turbine wheel can be bypassed by at least part of the exhaust gas from the first and second exhaust-gas conduit elements. This means that the exhaust gas flowing through the bypass line bypasses the turbine wheel and thus does not drive the turbine wheel.

In this case, the internal combustion engine comprises a valve device which has a first valve element. By means of the first valve element, a quantity of the exhaust gas flowing through the bypass line and bypassing the turbine wheel is adjustable. The valve device also has a second valve element. Furthermore, the internal combustion engine comprises a third exhaust pipe element, which opens into the third tide.

Furthermore, the DE 10 2008 020 405 A1 an exhaust gas turbocharger for an internal combustion engine of a motor vehicle. From the DE 10 2013 002 894 A1 a turbine for an exhaust gas turbocharger is known. In addition, the disclosed DE 101 52 803 A1 an internal combustion engine with an exhaust gas turbocharger.

Object of the present invention is to develop an internal combustion engine and a motor vehicle of the type mentioned in such a way that a particularly advantageous operation can be realized.

This object is achieved by an internal combustion engine having the features of patent claim 1 and by a motor vehicle having the features of patent claim 10. Advantageous embodiments with expedient developments of the invention are specified in the remaining claims.

In order to develop an internal combustion engine specified in the preamble of claim 1 species such that a particularly advantageous operation can be realized, it is inventively provided that the second valve element is fluidly connected to the first exhaust pipe element and fluidly connected to the second exhaust pipe element and at least one Hauptflutenverbindung, via which the first exhaust-gas conduit element and the second exhaust-gas conduit element can be fluidically connected to one another in the second valve element. Furthermore, the second valve element is switchable between a first state, a second state, a third state and a fourth state. In the first state, the third exhaust conduit member is fluidly connected to the first exhaust conduit member and the second exhaust conduit member via the second valve member, whereby exhaust gas from the first and second exhaust conduit members can flow into the third exhaust conduit member via the second valve member, such that in the first condition, the third exhaust conduit member can be supplied via the valve element with exhaust gas from the first and second exhaust pipe element. In addition, the main flow connection is closed in the first state, so that the first exhaust pipe member and the second exhaust pipe member are separated from each other at least within the second valve member.

The first flood and the second flood are also referred to as major floods, for example, the third flood is referred to as a tributary. In the first state, since the main flow connection is closed, in the first state, flood communication of the main flows does not occur because the first exhaust pipe member and the second exhaust pipe member and thus the main flows are separated from each other at least in the second valve member. As a result, for example, a shock charging of the internal combustion engine can be effected. Furthermore, at least a first part of the exhaust gas flowing through the first exhaust gas conduit element or the first flow can flow out of the first exhaust gas conduit element and into the third via the second valve element Exhaust pipe element and thus in the third tide (tributary) to flow, so that at least the first part of the exhaust gas from the first exhaust pipe element or from the first flood, which is also referred to as the first main flood, diverted and fed to the secondary tide. Furthermore, at least a second part of the exhaust gas flowing through the second exhaust pipe element or the second flow can flow out of the second exhaust pipe element and flow into the third exhaust pipe element and thus into the third flow (secondary flow) via the second valve element, so that at least the second part of the exhaust gas flows out the second exhaust pipe element or from the second tide, which is also referred to as the second main tide, branched off and supplied to the secondary tide. In this case, however, a flood separation of the main floods is provided because the Hauptflutenverbindung is closed by means of the second valve element and thus fluidly blocked.

In the second state, the main flooding connection is closed, whereby, for example, the aforementioned surge charging can be set or set. In addition, in the second state, the third exhaust pipe member, and thus the subsidiary flow, is separated from the first exhaust pipe member and the second exhaust pipe member and thus from the main flooding by means of the second valve member. As described above, for example, in the first state, the secondary flow is supplied with exhaust gas from the main flows, for example through which exhaust gas flows through the main flows and the secondary flow. In the second operating state, however, there is no supply of the secondary flow, in particular with exhaust gas from the first and second exhaust pipe elements or with exhaust gas from the main flows, so that, for example, the secondary flow is deactivated or switched off in the second state. In the first state, however, the secondary flood is switched on or activated.

In the third state, the third exhaust pipe element is separated from the first exhaust pipe element and from the second exhaust pipe element by means of the second valve element, so that in the third operating state the secondary flow (third flow) is deactivated or switched off. As in the second state, even in the third state, no exhaust gas is diverted from the first and second exhaust pipe members and supplied to the third and third exhaust pipe members, respectively. In the third state, however, the main flow connection is released, so that the first exhaust pipe element and the second exhaust pipe element via the second valve element, in particular in the second valve element, are fluidly interconnected. As a result, the main flows in the third state are fluidly connected to each other, so that in the third state, a flood connection of the main floods is provided. As a result, for example, a backup charging of the internal combustion engine can be realized, in particular while the third flood is switched off.

In the fourth state, the third exhaust-gas element is fluidically connected via the second valve element to the first exhaust-gas element and to the second exhaust-gas element and can thereby be supplied with exhaust gas from the first exhaust-gas element and from the second exhaust-gas element. Thus, in the fourth state, the secondary flow is switched on, since the secondary flow exhaust gas is supplied from the first and second exhaust pipe element or from the main floods. In addition, in the fourth state, the main flow connection is released, so that the first and second exhaust pipe element via the second valve element, in particular in the second valve element, are fluidly interconnected. This means that in the fourth state, a flood connection of the main floods is provided, whereby, for example, the aforementioned accumulation charge can be set or is set, in particular while the third flood is switched on.

The invention is based, in particular, on the following knowledge: the state of the art in the field of internal combustion engines, which are also referred to as internal combustion engines, now includes exhaust gas turbochargers, the turbines of which are subjected to multiple flooding and, as a rule, double-flow. The respective internal combustion engine has, for example, combustion chambers, which are also referred to as cylinders. A first portion of the cylinders delivers exhaust gases into a first tide, with another portion of the cylinders delivering exhaust gas into another tide of the respective turbine. As a result, a flood separation can be realized, whereby a reduction of exhaust gas-carrying volumes or flow cross sections per flood can be realized. As a result, the aforementioned surge charging or impact charging operation of the turbine can be realized. To control such a shock-charged exhaust gas turbocharger usually also called a wastegate bypass device is provided. This makes it possible to selectively direct the exhaust gas from both floods past the turbine wheel. In addition to advantages in transient engine operation, the engine torque can be increased at low speeds by using a multi-flow turbine, so that even at low speeds high torques can be achieved, which can be provided by the engine. These advantages are achieved, inter alia, by the small volumes or flow cross sections per flood. If the engine is operated at high engine speeds, lead the small Volumes or flow cross-sections, however, to the disadvantage that the pressure in front of the turbine increases sharply. As a result, the charge change and consequently the efficiency of the internal combustion engine deteriorate. In order to solve this conflict of objectives, an additional actuator can be used in particular in the form of a valve, this actuator causes a connection of the otherwise separate floods at high engine speeds. The outflowing exhaust gas thus has a larger flow cross-section per flood, which reduces the pressure in front of the turbine.

In principle, two solutions are possible for realizing the flood connection: In addition to the valve of the bypass device, also referred to as a blow-off valve, an actuator for flood connection can be used, so that two actuators and thus two valves and two actuators are provided. Furthermore, it is possible to realize the functions of bypassing the turbine wheel and the flood connection by means of exactly one actuator, whereby a combination solution is provided. Bypassing of the turbine wheel is also referred to as blow-off or blow-off. To take advantage of the flood connection, thus, for example, two actuators are provided. Disadvantage of said combination solution, however, is that it is limited or not possible to separate the functions of the blow-off of the flood connection from each other. Compared to conventional solutions with two actuators, that is compared to the above combination solution, it is possible in the internal combustion engine according to the invention, the smaller the two main floods, that is to carry out with smaller flow cross sections or volumes. As a result, a degree of design freedom can be created by which advantages can be realized in certain engine operating ranges, such as, for example, transient operation and the provision of high torques at low engine speeds. However, no disadvantages are to be expected in operating areas with high engine speeds. In the internal combustion engine according to the invention, it is thus possible to separate by the valve elements, the functions of the flood connection and the blow-off, so that a particularly advantageous and needs-based operation can be realized. In addition, it is possible to influence the size of the turbine, in particular its spread, in addition to the function of the flood connection. In particular, compared with the combination solution in the case of the internal combustion engine according to the invention, it is possible to control the functions of blowing off the flood connection independently of one another. As a result, a function separation of the functions blow-off and flood connection can be ensured. As a result, for example, a particularly efficient and thus low-efficiency operation can be realized, so that, for example, the Energiebeziehungsweise fuel consumption of the internal combustion engine can be kept in a very small frame.

In an advantageous embodiment of the invention, the first valve element on a first valve part for adjusting the amount of exhaust gas and a first actuator, by means of which for adjusting the amount, the first valve member is movable. As a result, the amount flowing through the bypass line of the exhaust gas can be adjusted particularly needs, whereby a particularly advantageous operation can be realized.

A further embodiment is characterized in that the second valve element has at least one second valve part formed separately from the first valve part and provided in addition to the first valve part and movable relative to the first valve part, for example, and a second actuator provided in addition to the first actuator which is for switching the second valve element, the second valve member, in particular relative to the first valve member, movable. As a result, the aforementioned separation of functions can be created so that, for example, the first valve part can be moved, while a movement of the second valve part is omitted and / or vice versa. Thus, for example, the flood connection can be adjusted while no adjustment or adjustment of the amount flowing through the bypass line of the exhaust gas. As a result, a particularly needs-based operation can be displayed. In a further embodiment of the invention, the second valve member is pivotable about a pivot axis, whereby the flood connection and the amount of exhaust gas flowing through the bypass line can be adjusted particularly advantageous.

In a further embodiment of the invention, the second valve element has a first valve region with two channels and a partition wall, wherein in the first state, a first of the channels is fluidly connected to the first exhaust pipe element and the second channel fluidly connected to the second exhaust pipe element. The channels are fluidly connected to the third exhaust pipe element, and the Hauptflutenverbindung is closed by means of the channels separating the partition wall.

In a further advantageous embodiment of the invention, the second valve element has a second valve region, by means of which, in the second state, the main flow connection is closed, that is, fluidically blocked, and the third Exhaust line element is separated from the first and second exhaust pipe element.

As further particularly advantageous, it has been shown, when the second valve element has a third valve region, by means of which in the third state, the main flow connection released via a connecting channel and the third exhaust pipe element is separated from the first and second exhaust pipe element.

A further embodiment is characterized in that the second valve element has a fourth valve region with two further channels, wherein in the fourth state a first of the further channels is fluidically connected to the first exhaust pipe element, the second further channel is fluidically connected to the second exhaust pipe element and the others Channels are fluidly interconnected via the main flooding connection by means of a connection channel. Furthermore, in the fourth state, the further channels are fluidically connected to the third exhaust pipe element.

At least one of the valve areas is formed for example by the aforementioned second valve part, wherein the different states can be adjusted in a particularly simple and needs-based manner by means of the valve areas. As a result, a particularly efficient and effective operation can be represented.

It has finally shown to be particularly advantageous if the valve areas, in particular translationally, are movable, in particular relative to a housing of the second valve element, whereby the second valve element is switchable between the states.

The invention also includes a motor vehicle with an internal combustion engine according to the invention. Advantages and advantageous embodiments of the internal combustion engine according to the invention are to be regarded as advantages and advantageous embodiments of the motor vehicle according to the invention and vice versa.

Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing. The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or in the figures alone can be used not only in the respectively specified combination but also in other combinations or in isolation, without the scope of To leave invention.

• 1 eine schematische Darstellung einer erfindungsgemäßen Verbrennungskraftmaschine;
• 2 ausschnittsweise eine schematisch Schnittansicht eines Ventilelements der Verbrennungskraftmaschine gemäß einer ersten Ausführungsform; und
• 3 ausschnittsweise eine schematisch Schnittansicht des Ventilelements gemäß einer zweiten Ausführungsform.

The drawing shows in:

• 1 a schematic representation of an internal combustion engine according to the invention;
• 2 a schematic sectional view of a valve element of the internal combustion engine according to a first embodiment; and
• 3 a fragmentary sectional view of the valve element according to a second embodiment.

In the figures, the same or functionally identical elements are provided with the same reference numerals.

1 shows a schematic representation of an internal combustion engine 10 for a motor vehicle, in particular for a motor vehicle such as a passenger car. The internal combustion engine 10 has a motor housing designed, for example, as a cylinder housing, in particular as a cylinder crankcase 12 through, through which combustion chambers in the form of cylinders 14 and 16 are formed. The cylinders 14 belong to a first group or form a first group of cylinders, which are the cylinders 16 belong to a second group of cylinders or form a second group of cylinders. The first group is also called the first part, while the second group is also called the second part of the cylinder 14 and 16 referred to as.

The internal combustion engine 10 has an at least air-permeable intake tract 18 on, by means of which, for example, the intake tract 18 flowing air to the particular in the cylinder 14 and 16 to be led. It is in the intake 18 the air filter 20 arranged to filter the air. In addition, in the intake tract 18 for example, as a throttle 22 formed valve means arranged by means of which a in the cylinder 14 and 16 inflowing amount of the intake tract 18 flowing air is adjustable.

The internal combustion engine 10 further comprises at least one exhaust gas turbocharger 24 on, which one in the intake tract 18 arranged compressor 26 with at least one compressor wheel 28 having. By means of the compressor wheel 28 becomes the intake tract 18 compressed air flowing through. As a result, the air is heated. In order to realize a particularly high degree of supercharging, is in the intake 18 downstream of the compressor 26 a charge air cooler 30 arranged, by means of which the compressed and thus heated air is cooled before the compressed air into the cylinder 14 and 16 flows.

In a fired operation of the internal combustion engine 10 be the cylinders 14 and 16 the air and a particular liquid fuel supplied, which for example in the cylinder 14 and 16 injected directly. This results in the respective cylinder 14 respectively 16 a fuel-air mixture, which, in particular by spark ignition, ignited and is burned in the sequence. This results in exhaust gas of the internal combustion engine 10 , which comprises an exhaust gas tract through which the exhaust gas can flow 32 having. By means of the exhaust tract 32 is the exhaust from the cylinders 14 and 16 dissipated. The turbocharger 24 has one in the exhaust system 32 arranged turbine 34 with a turbine housing 36 on. The turbine housing 36 indicates a first flood 38 , a second flood 40 and a third flood 42 on, with the floods 38 and 40 Main floods of the turbine 34 are. The flood 42 is a tributary of the turbine 34 ,

Out 1 is recognizable that the exhaust tract 32 one of the first tides 38 assigned and in the first tide 38 opening and thereby with the first tide 38 fluidly connected first exhaust pipe element 44 having. In addition, the exhaust tract includes 32 a second exhaust pipe element 46 , that of the second flood 40 is assigned while doing the second tide 40 flows and fluidly with the second tide 40 connected is. In addition, a third exhaust pipe element 48 the exhaust tract 32 provided, wherein the third exhaust pipe element 48 the third flood 42 is assigned while doing the third tide 42 flows and fluidly with the third flood 42 connected is. The exhaust pipe elements 44 . 46 and 48 are also referred to as floods or flue gases.

The turbine housing 36 has a recording room 52 on, in which the floods 38 . 40 and 42 lead. The floods 38 . 40 and 42 are traversed by exhaust gas and serve to flood the 38 . 40 and 42 flowing exhaust gas into the receiving space 52 to lead. The turbine 34 has a turbine wheel 50 which rotates in the receiving space 52 is arranged. Thus, the turbine wheel 50 about an axis of rotation relative to the turbine housing 36 rotatable. That over the floods 38 . 40 and 42 in the recording room 52 introduced exhaust gas may be the turbine wheel 50 flow and thereby drive, causing the turbine wheel 50 is rotated about the axis of rotation. The floods 38 . 40 and 42 are spiral channels, which are in the circumferential direction of the turbine wheel 50 extend over the circumference at least substantially spiral.

The turbine wheel 50 and the compressor wheel 28 are components of a rotor 54 the exhaust gas turbocharger 24 , The rotor 54 also includes a wave 56 , which rotatably with the compressor wheel 28 and with the turbine edge 50 connected is. Because of the turbine wheel 50 is driven by the exhaust gas, the compressor wheel 28 over the wave 56 from the turbine wheel 50 driven. As a result, by means of the compressor wheel 28 the intake tract 18 compressed air flowing through, whereby the energy contained in the exhaust gas is used to compress the air.

The internal combustion engine 10 also has a bypass device 58 on which at least one bypass line 60 having. About the bypass 60 is the turbine wheel 50 of at least part of the exhaust gas from the combustion chambers (cylinders 14 and 16 ) to get around. This means that the bypass line 60 exhaust gas flowing through the turbine wheel 50 does not drive, but on the turbine wheel 50 is bypassed. The bypass line 60 is at least a first connection point and at least one second connection point fluidly with the exhaust gas tract 32 connected, wherein the first connection point upstream of the turbine wheel 50 and the second connection point downstream of the turbine wheel 50 is arranged.

In the exhaust tract 32 is at least one exhaust aftertreatment device 62 arranged, by means of which the exhaust gas can be post-treated. In this case, the exhaust gas aftertreatment device 62 arranged downstream of the second connection point. The internal combustion engine 10 also includes a valve device 64 which is a first valve element 66 and a second valve element 68 having. The respective valve element 66 respectively 68 is also referred to as an actuator. The first valve element 66 is also referred to as wastegate, as it is used to a the bypass line 60 flowing through and thus the turbine wheel 50 to provide immediate amount of the exhaust gas. This bypassing of the turbine wheel 50 is also referred to as blow off or blow off, so that the bypass line 60 and the wastegate can be used for blow off.

How out 1 Recognizable is the bypass line 60 over the first valve element 66 fluidic with the exhaust pipe elements 44 and 46 connected, so for example Abas from at least one of the cylinder 16 and exhaust from at least one of the cylinders 14 over the valve element 66 into the bypass 60 can flow in. Thus, by means of the first valve element 66 the the bypass line 60 flowing amount of the exhaust gas from the exhaust pipe elements 44 and 46 adjustable.

During the fired operation of the internal combustion engine 10 promote the cylinders 14 their exhaust gas in the exhaust pipe element 44 but not in the exhaust pipe element 46 so the cylinders 14 to the exhaust pipe member 44 are merged. During the fired operation the cylinders promote 16 their exhaust gas in the exhaust pipe element 46 but not in that Exhaust pipe element 44 so the cylinders 16 to the exhaust pipe member 46 are merged. In this case, at least a part of the exhaust gas from at least one of the cylinders 14 and at least a portion of the exhaust gas from at least one of the cylinders 16 branched off and over the first valve element 66 into the bypass 60 be initiated so that the the bypass line 60 flowing exhaust gas, for example, from at least one of the cylinders 14 as from at least one of the cylinders 16 comes.

In order to be able to realize a particularly advantageous operation, the second valve element 68 fluidic with the exhaust pipe elements 44 and 46 connected. In addition, the second valve element 68 how very good from a synopsis with 2 it can be seen, at least one Hauptflutenverbindung 70 on, over which the exhaust pipe elements 44 and 46 and thus, for example, the main floods are fluidically connectable to each other. Like also very good in synopsis with 2 is recognizable, is the second valve element 68 switchable between a first state, a second state, a third state and a fourth state. In the first state, the third exhaust pipe element 48 over the second valve element 68 with the exhaust pipe elements 44 and 46 fluidly connected and thereby with exhaust gas from the exhaust pipe elements 44 and 46 serviceable while the main flood connection 70 closed or locked. As a result, for example, at least one respective part of the respective exhaust pipe elements 44 and 46 flowing exhaust gas from the exhaust pipe elements 44 and 46 branched off and over the second valve element 68 in the third exhaust pipe element 48 or introduced into the tributary. In this case, a flood connection of the main floods is disconnected or interrupted, since the main flood connection 70 is locked. As a result, for example, a shock charging or a shock charging operation can be represented. In the second state, the main flood connection 70 closed, and the third exhaust pipe element 48 is by means of the second valve element 68 from the exhaust pipe elements 44 and 46 separated. Thus, if in the first state, the secondary flow is switched on or activated, the secondary flow is deactivated or switched off in the second state. Both in the first state and in the second state, a flood connection of the main floods is interrupted.

In the third state, the third exhaust pipe element 48 by means of the second valve element 68 from the exhaust pipe elements 44 and 46 separated, whereby the tributary is switched off. The main flood connection 70 however, it is released so that the exhaust pipe elements 44 and 46 over the second valve element 68 , in particular in the valve element 68 , are fluidly interconnected. Thus, in the third state, a flood connection of the main floods is activated or set, so that, for example, a congestion charging or a congestion charging operation is realized.

In the fourth state, the third exhaust pipe element 48 over the second valve element 68 with the exhaust pipe elements 44 and 46 fluidly connected and thereby with exhaust gas from the exhaust pipe elements 44 and 46 serviceable while the main flood connection 70 is released so that the exhaust pipe elements 44 and 46 over the second valve element 68 , in particular in the valve element 68 , are fluidly interconnected. Thus, the flood connection of the main floods in the fourth state is set or activated.

2 shows a first embodiment of the second valve element 68 , The second valve element 68 has, for example, a valve housing 72 with a first connection 74 , a second connection 76 and a third port 78 on. About the connection 74 is the valve element 68 for example, with the exhaust pipe element 44 and thus with the first flood 38 fluidly connected, which is also referred to as the first major flood. About the connection 76 is for example the valve element 68 fluidly with the exhaust pipe element 46 and thus with the second flood 40 connected, which is also referred to as the second major flood. About the connection 78 is for example the valve element 68 fluidic with the third exhaust pipe element 48 and thus connected with the tributary.

The valve element 68 has four valve areas 79 . 80 . 82 and 84 on which, for example, respective valve parts of the valve element 68 are. The valve areas 79 . 80 . 82 and 84 are, in particular relative to the valve housing 72 , translationally movable to thereby the valve element 68 switch between the four states. This illustrate in 2 double arrows 86 the movement or mobility of the valve areas 79 . 80 . 82 and 84 relative to the valve housing 72 , The valve areas 79 . 80 . 82 and 84 are thus used to control the four states of the valve element 68 to realize. In this case, the valve parts of the valve element 68 for example, separately from a valve member of the valve element 66 formed and in addition to the valve member of the valve element 66 provided, wherein the valve member of the valve element 66 Also referred to as another valve part. By means of the further valve part, for example, the bypass line 60 flowing through amount of the exhaust gas adjustable. In this case, the valve element 66 For example, a first actuator, which is also referred to as a first actuator. By means of the first actor is the other Valve part movable, thereby reducing the amount of the bypass line 60 adjust exhaust gas flowing through. The valve element 68 has, for example, a second actuator, which is also referred to as a second actuator. In this case, the valve parts of the valve element 68 For example, by means of the second actuator movable, thereby the valve element 68 to switch between the states. In particular, it is possible, the actuators of the valve elements 66 and 68 to control separately or independently, so that, for example, the valve parts of the valve elements 66 and 68 can be moved relative to each other. This is to be understood in particular that the valve areas 79 . 80 . 82 and 84 of the valve element 68 can be moved while a movement of another valve member of the valve element 68 fails and / or vice versa. As a result, a separation of functions can be represented, within the scope of which the functions of the flood separation or flood connection and the blow-off can be kept separate or carried out separately from one another. At the in 2 shown first embodiment, the valve parts of the valve element 68 translationally movable or displaceable, in particular relative to the valve housing 72 , whereby the second valve element 68 is switchable between the states.

In this case, the first valve area 79 two channels 88 and 90 and one the channels 88 and 90 separating, between the channels 88 and 90 arranged partition 92 on. In the first state is the channel 88 over the connection 74 fluidly with the exhaust pipe element 44 connected, and the second channel 90 is about the connection 76 fluidly with the exhaust pipe element 46 connected. Further, the channels 88 and 90 over the connection 78 fluidly with the exhaust pipe element 48 connected. The exhaust gas from the exhaust pipe elements 44 and 46 can thus on the connections 74 and 76 into the channels 88 and 90 inflow, the channels 88 and 90 flow through and out of the channels 88 and 90 in the exhaust pipe element 48 and continue to flow into the tributary and flow through the tributary. Further, in the first state, the main flooding connection 70 by means of the channels 88 and 90 separating partition 92 closed and thus fluidly blocked.

In the second state is by means of the valve area 80 the main flood connection 70 fluidly obstructed, and the exhaust pipe element 48 is from the exhaust pipe elements 44 and 46 by means of the valve area 80 separated.

In the third state is by means of the third valve area 82 the main flood connection 70 released so that over the main flood connection 70 by means of a connecting channel 92 the exhaust pipe elements 44 and 46 and thus the main floods are interconnected. In this case, in the third state, the third exhaust pipe element 48 by means of the third valve area 82 from the exhaust pipe elements 44 and 46 separated.

The fourth valve area 84 has two more channels 94 and 96 on, which via a connection channel 98 of the valve area 84 fluidly connected to each other. In the fourth state is the further channel 94 fluidly with the exhaust pipe element 44 connected while the other channel 96 fluidly with the exhaust pipe element 46 connected is. Further, in the fourth state, the other channels 94 and 96 over the main flood connection 70 fluidly connected to each other, since, for example, in the fourth state of the connecting channel 98 in the main flood connection 70 is arranged. In addition, in the fourth state, the other channels 94 and 96 fluidic with the third exhaust pipe element 48 connected, so that in the fourth state, the exhaust pipe element 48 over the other channels 94 and 96 with the exhaust pipe elements 44 and 46 connected is. This illustrate in 2 not provided with reference numerals arrows the respective valve area 79 . 80 . 82 and 84 flowing exhaust gas.

3 shows a second embodiment of the second valve element 68 , In this case, the valve element 68 at least one valve part 100 on which - as in 3 by a double arrow 102 is illustrated - about a pivot axis 104 relative to the valve housing 72 is pivotable. 3 shows, for example, a closed position of the valve member 100 , wherein in the closed position by means of the valve member 100 the main flood connection 70 is fluidly locked. Further, in the closed position by means of the valve member 100 the connection 78 from the terminals 74 and 76 separated, so that the exhaust pipe element 48 from the exhaust pipe elements 44 and 46 is fluidically separated. The valve part 100 is for example between the closed position and at least one open position relative to the valve housing 72 pivotable, wherein the at least one open position in 3 dashed lines is illustrated. In the open position gives the valve part 100 for example, both the main flood connection 70 as well as a fluidic connection of the connection 78 with the connections 74 and 76 free, so that in the at least one open position, for example, both the Hauptflutenverbindung 70 release as well as the exhaust pipe element 48 with the exhaust pipe elements 44 and 46 is fluidically connected.

Compared to conventional internal combustion engines, it is possible to make the main floods particularly small, whereby a particularly advantageous shock charging operation can be represented. Furthermore, it can be switched as needed between the shock charging operation and the accumulation charging operation. Furthermore, the aforementioned function separation can be realized, so that a particularly advantageous operation can be realized.

LIST OF REFERENCE NUMBERS

10

Internal combustion engine

12

motor housing

14

cylinder

16

cylinder

18

intake system

20

air filter

22

throttle

24

turbocharger

26

compressor

28

compressor

30

Intercooler

32

exhaust tract

34

turbine

36

turbine housing

38

first tide

40

second tide

42

third tide

44

first exhaust pipe element

46

second exhaust pipe element

48

third exhaust pipe element

50

turbine

52

accommodation space

54

rotor

56

wave

58

bypass means

60

bypass line

62

exhaust treatment device

64

valve means

66

first valve element

68

second valve element

70

overflow

72

valve housing

74

connection

76

connection

78

connection

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102004055571 A1 [0002]
• DE 102008020405 A1 [0004]
• DE 102013002894 A1 [0004]
• DE 10152803 A1 [0004]

Claims (10)

Internal combustion engine (10) for a motor vehicle, with at least one first combustion chamber (14), with at least one second combustion chamber (16), with at least one of exhaust gas from the first combustion chamber (14) through which the first exhaust gas conduit member (44), with at least one of exhaust gas from the second combustion chamber (16) can be flowed through the second exhaust pipe element (46), with at least one exhaust gas turbocharger (24) having a turbine (34) with a turbine housing (36) having a first flood (38) into which the first exhaust pipe element (44 ), a second flow (40) into which the second exhaust pipe member (46) opens and at least one of exhaust from the combustion chambers (14, 16) through which third flood (42), and a rotatably received in the turbine housing (36) Turbine wheel (50) comprising, with a bypass device (58) which at least one of exhaust gas from the first and second exhaust pipe element (44, 46) through-flowable bypass line (60), via which the turbine wheel (50) is to be bypassed by at least a portion of the exhaust gas from the first and second exhaust conduit members (44, 46), having valve means (64) comprising a first valve member (66) for displacing an amount of the bypass conduit (60 ) and bypassing the turbine wheel (50) is adjustable from the first and second exhaust conduit members (44, 46) and includes a second valve member (68), and a third exhaust conduit member (48) inserted into the third flow (42). characterized in that the second valve member (68) is fluidly connected to the first and second exhaust conduit members (44, 46), at least one main flow connection (70) via which the first and second exhaust conduit members (44, 46) in the second Valve element (68) are fluidically interconnected, and between: - a first state in which the third exhaust pipe element (48) via the second valve element (68) with the first u second exhaust conduit member (44, 46) fluidly coupled thereby to be supplied with exhaust gas from the first and second exhaust conduit members (44, 46) while the main surge connection (70) is closed by the second valve member (68), a second condition wherein the main flow connection (70) is closed and the third exhaust pipe member (48) is separated from the first and second exhaust pipe members (44, 46) by the second valve member (68); a third condition in which the third exhaust pipe member (48) is connected by means of the second valve member (68) is separated from the first and second exhaust conduit members (44, 46) and the main flow connection (70) is released so that the first and second exhaust conduit members (44, 46) are fluidly connected to one another via the second valve member (68); - A fourth state is switchable, in which the third exhaust pipe element (48) via the second valve element (68) with the first and second exhaust line member (44, 46) fluidly and thereby be supplied with exhaust gas from the first and second exhaust conduit members (44, 46) and the Hauptflutenverbindung (70) is released, so that the first and second exhaust pipe element (44, 46) via the second valve element ( 68) are fluidly connected to each other. Internal combustion engine (10) after Claim 1 characterized in that the first valve member (66) comprises a first valve member for adjusting the quantity and a first actuator by means of which the first valve member is movable for adjusting the amount. Internal combustion engine (10) after Claim 2 characterized in that the second valve member (68) comprises at least one second valve member (79, 80, 82, 84, 100) formed separately from the first valve member and a second actuator provided in addition to the first actuator by means of which the second actuator is switched Valve element (68), the second valve member (79, 80, 82, 84, 100) is movable. Internal combustion engine (10) after Claim 3 , characterized in that the second valve part (100) about a pivot axis (104) is pivotable. Internal combustion engine (10) according to one of the preceding claims, characterized in that the second valve element (68) has a first valve region (79) with two channels (88, 90) and a partition wall (92), wherein in the first state: - a first of the channels (88, 90) is fluidly connected to the first exhaust conduit member (44); - The second channel (90) is fluidly connected to the second exhaust pipe element (46); - The channels (88, 90) are fluidly connected to the third exhaust pipe element (48); and - the main flooding connection (70) is closed by means of the separating wall (92) separating the channels (88, 90) from each other. Internal combustion engine (10) according to one of the preceding claims, characterized in that the second valve element (68) has a second valve region (80), by means of which in the second state the Hauptflutenverbindung (70) closed and the third exhaust pipe element (48) from the first and second exhaust pipe member (44, 46) is separated. Internal combustion engine (10) according to one of the preceding claims, characterized in that the second valve element (68) has a third valve region (82), by means of which in the third state the main flow connection (70) is released and the first and second exhaust pipe elements (44, 46 ) are fluidly connected to one another via a connecting channel (92) and the third exhaust pipe element (48) is separated from the first and second exhaust pipe elements (44, 46). Internal combustion engine (10) according to one of the preceding claims, characterized in that the second valve element (68) has a fourth valve region (84) with two further channels (94, 96), wherein in the fourth state: - a first of the further channels ( 94, 96) is fluidly connected to the first exhaust conduit member (44); - The second further channel (96) is fluidly connected to the second exhaust pipe element (46); - The further channels (94, 96) via the Hauptflutenverbindung (70) by means of a connecting channel (98) are fluidly interconnected, and - the further channels (94, 96) are fluidly connected to the third exhaust pipe element (48). Internal combustion engine (10) after the Claims 5 to 8th , characterized in that the valve regions (79, 80, 82, 84), in particular translationally, are movable, whereby the second valve element (58) is switchable between the states. Motor vehicle, with an internal combustion engine (10) according to one of the preceding claims.

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